<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .gameOvers {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 400px;
            height: 400px;
            background-color: skyblue;
            color: red;
            display: none;
        }
        
        .testClassList {
            display: block;
            color: rgb(6, 6, 6);
        }
        
        .hide {
            display: none;
        }
    </style>
</head>

<body>
    <div class="testClassList">测试classList</div>
    <input type="text" placeholder="搜索城市" class="input">
    <button class="button" type="button" onclick="let tips = alert('你点击了搜索按钮！');">搜索</button>
    <div class="word"></div>
    <div class="scores">0</div>
    <div class="times"></div>
    <div class="gameOvers"></div>
    <div>
        <select class="select">
            <option value="jiandan">简单</option>
            <option value = "zhongdeng" selected>中等</option>
            <option value="jiaonan">较难</option>
        </select>
    </div>
    <script>
        let select = document.querySelector('.select');
        let word = document.querySelector('.word');
        let scores = document.querySelector('.scores');
        let inputs = document.querySelector('.input');
        let times = document.querySelector('.times');
        let games = document.querySelector('.gameOvers');
        let test = document.querySelector('.testClassList');
        let randows = ['张三', '李四', '王五', '小强', '小李'];
        // 难度选择
        let difficulty = localStorage.getItem('selects') !== null ? localStorage.getItem('selects') : 'zhongdeng'
            //    更新难度选择
        difficulty.value = localStorage.getItem('selects') !== null ? localStorage.getItem('selects') : 'zhongdeng'
            // 下拉框事件监听
        select.addEventListener('change', e => {
            difficulty = e.target.value;
            localStorage.setItem('selects', difficulty)
        })
        scores.addEventListener('click', () => {
                // 如果存在就删除，没有就添加
                test.classList.toggle('hide')
            })
            // 聚焦
        inputs.focus()
            // 取到randows数组里面的数据
        function randowData() {
            return randows[Math.floor(Math.random() * randows.length)]
        }
        // 开始倒数
        const timeInterval = setInterval(updateTime, 1000);
        let time = 10;

        function updateTime() {
            time--;
            times.innerHTML = time + 's';
            if (time <= 0) {
                clearInterval(timeInterval)
                gameOver()
            }
        };
        // 游戏结束
        function gameOver() {
            games.innerHTML = `
                        <h1>游戏结束</h1>
                        <p>最终得分${score}</p>
                        <button onclick="location.reload()">再玩一次</button>
                        `;
            games.style.display = 'block'
        }
        // 把生成的内容插入到dom中
        function addWord() {
            // 把randomWord公布出去
            randomWord = randowData()
            word.innerHTML = randomWord
        }
        // 更新得分
        let score = 0;

        function updateScore() {
            score++;
            scores.innerHTML = score
        }
        addWord()
        inputs.addEventListener('input', (e) => {
            if (e.target.value === randomWord) {
                // 更换随机生成的数据
                addWord()
                    // 更新得分
                updateScore()
                inputs.value = "";
                if (difficulty === 'jiaonan') {
                    time += 5;
                } else if (difficulty === 'zhongdeng') {
                    time += 10
                } else {
                    time += 15;
                }

                // 并且更新一下时间
                updateTime()
            }
        })
    </script>
</body>

</html>